diff --git a/Documentation/Books/Users/Foxx/FoxxSessions.mdpp b/Documentation/Books/Users/Foxx/FoxxSessions.mdpp
index 89404e2a57..bd34c01ca2 100644
--- a/Documentation/Books/Users/Foxx/FoxxSessions.mdpp
+++ b/Documentation/Books/Users/Foxx/FoxxSessions.mdpp
@@ -21,7 +21,7 @@ If *type* is set to *"cookie"*, the session cookie will be updated after every r
   * *type* (optional): sessions type, currently only *"cookie"* and *"header"* are supported. Default: *"cookie"*.
   * *cookieName* (optional): name of the session cookie if using cookie sessions. If a *cookieSecret* is provided, the signature will be stored in a cookie named *cookieName + "_sig"*. Default: *"sid"*.
   * *cookieSecret* (optional): secret string to sign session cookies with if using cookie sessions.
-  * *headerName* (optional): name of the session header if using header sessions. Default: *"X-Session-Id"*.
+  * *headerName* (optional): name of the session header if using header sessions. Default: *"x-session-id"*.
   * *autoCreateSession* (optional): whether a session should always be created if none exists. Default: *true*.
 
 @EXAMPLES
diff --git a/js/server/modules/org/arangodb/foxx/sessions.js b/js/server/modules/org/arangodb/foxx/sessions.js
index 7ff38b9a8e..4314233157 100644
--- a/js/server/modules/org/arangodb/foxx/sessions.js
+++ b/js/server/modules/org/arangodb/foxx/sessions.js
@@ -159,7 +159,7 @@ function Sessions(opts) {
       throw new Error('Header name must be a string or empty.');
     }
     if (!opts.headerName) {
-      opts.headerName = 'X-Session-Id';
+      opts.headerName = 'x-session-id';
     }
   } else {
     throw new Error('Only "cookie" and "header" type sessions are supported at this time.');